Page 23 - Technical Guide

P roSteering®

Directional
Pull

Problem
description:

Vehicle
tends
to
pull
to
the
right
or
left

To
keep
the
truck
going
straight
a
continually
effort
or
force
is
required

Q:

Do
you
experience
directional
pull
under
braking
or
accelerating

conditions?

A
:

Braking

Result

Potential
cause(s)

Remedy

Verification
or
action

Unequal
braking
force
Inspect
braking
Adjust
or
replace

surfaces
for
oil/grease
brakes

or
other
contamination

and
the
overall

condition
of
surfaces

Checklist:

Verify
alignment
of
steer
axle
and
rear
drive
axles

Verify
wheel
bearings
are
adjusted
to
original
manufacturers
guideline

Air
suspension
adjust
is
consistent
with
the
original
manufacturers
guideline

Swap
steer
tires
and
look
for
mismatched
belt
tread

Verify
the
vehicle
is
not
overloaded

A:

Acceleration

Potential
cause(s)

Verification
or
action

Result

Remedy

Unbalanced
gear
Complete
the
original
Pass
Investigate
the
next

manufacturers
gear
Fail
potential
cause

imbalance
test
Replace
the
steering

procedure
gear

Perform
the
power
Pass
Call
technical
support

steering
pump
test
as

Power
steering
pump
described
in
the

manufacturers
service
Fail
Repair
or
replace
the

power
steering
pump

manual

150416_TECHNICAL
GUIDE
23